(set-option :incremental false)
(set-info :status unsat)
(set-logic QF_BV)
(declare-fun x () (_ BitVec 64))
(declare-fun y () (_ BitVec 32))
(declare-fun z () (_ BitVec 32))
(assert (= x (concat y z)))
(check-sat-assuming ( (not (= ((_ extract 63 32) x) y)) ))
